Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10151990 | Toner | Masao Suzuki, Kazuyuki Sato, Shohei Fukuya, Atsushi Nakamoto, Makoto Fukatsu +4 more | 2018-12-11 |
| 9442418 | Developing device, process cartridge and image forming apparatus | Takahiro Kawamoto, Kazuhisa Kemmochi, Masayoshi Kato, Makoto Fukatsu, Atsushi Nakamoto +3 more | 2016-09-13 |
| 8835089 | Toner and method for producing the same, and two-component type developer | Emi Hagiwara, Hirokazu Usami, Manami Haraguchi, Ryo Inoue, Shintaro Ishida +1 more | 2014-09-16 |
| 8755729 | Glossiness processing apparatus and image forming apparatus | Emi Hagiwara, Makoto Fukatsu, Shintaro Ishida, Shunichi Takada | 2014-06-17 |
| 8718529 | Image forming apparatus providing glossiness treatment | Makoto Fukatsu, Emi Hagiwara, Shintaro Ishida, Shunichi Takada | 2014-05-06 |
| 7783242 | Image forming apparatus | Makoto Fukatsu | 2010-08-24 |
| 7515861 | Image heating apparatus controlling relative positions of fixing belt and recording material | Makoto Fukatsu | 2009-04-07 |
| 7239831 | Image forming apparatus when a maximum developing bias voltage |V| max and surface potential Vd of a charged image bearing member satisfy: |V| max≦|Vd| | Kazunari Hagiwara, Kouichi Okuda, Yasushi Shimizu, Hikaru Osada, Shuji Moriya | 2007-07-03 |
| 7233758 | Developing apparatus featuring a developer carrying member with an elastic surface layer | Hikaru Osada, Kouichi Okuda, Yasushi Shimizu, Kenya Ogawa, Shuji Moriya +1 more | 2007-06-19 |
| 7031641 | Image-forming apparatus having pre-charge exposure device for image carrier | Hisashi Nakahara, Yasuhiro Nakata | 2006-04-18 |
| 7031629 | Image forming apparatus which recovers toner by developing device | Takeshi Kawamura, Koichi Otaka, Yasushi Shimizu, Ken Nakagawa, Hikaru Osada | 2006-04-18 |
| 6904253 | Charging member having an elastic foam member including cell portions whose gap ratio is 5% to 50%, charging apparatus, process cartridge, and image forming apparatus having such charging member | Takahiro Hosokawa, Harumi Ishiyama, Jun Hirabayashi | 2005-06-07 |
| 6847796 | Charging member and image forming apparatus provided with the same | Koichi Okuda, Yasushi Shimizu, Masahiro Yoshida | 2005-01-25 |
| 6832062 | Charging apparatus, process cartridge and image forming apparatus having electroconductive particles charged in a nip between a charging member and a member to be charged | Harumi Ishiyama, Jun Hirabayashi, Norio Takahashi | 2004-12-14 |
| 6788911 | Charging apparatus, process cartridge and image forming apparatus | Harumi Ishiyama, Jun Hirabayashi | 2004-09-07 |
| 6615010 | Electrifier for charging developer carrying member using charge particles, including charge rotary member and nip forming member having bias polarity the same as developer polarity | Jun Hirabayashi, Harumi Ishiyama | 2003-09-02 |
| 6580889 | IMAGE FORMING APPARATUS HAVING A MEMBER TO BE CHARGED, INJECTION CHARGING MEANS HAVING AN ELASTIC MEMBER FOR PRESS-CONTACTING THE MEMBER TO BE CHARGED, AND ELECTROCONDUCTIVE PARTICLES BETWEEN THE ELASTIC MEMBER AND THE MEMBER TO BE CHARGED | Harumi Ishiyama, Yukio Nagase, Jun Hirabayashi | 2003-06-17 |
| 6553199 | Charging device, process cartridge and image forming apparatus | Harumi Ishiyama, Jun Hirabayashi | 2003-04-22 |
| 6549742 | Charging apparatus employing charging particles, and image forming apparatus employing such a charging apparatus | Harumi Ishiyama, Jun Hirabayashi, Norio Takahashi | 2003-04-15 |
| 6519433 | Image forming apparatus in which electroconductive particles are supplied to charging means from developing device by way of image bearing member | Jun Hirabayashi, Harumi Ishiyama | 2003-02-11 |
| 6473582 | Contact-type charging device having a plurality of projections over the surface of the charging device | Harumi Ishiyama, Jun Hirabayashi | 2002-10-29 |
| 6466758 | Developing apparatus having foreign matter accumulating space | Harumi Ishiyama, Jun Hirabayashi | 2002-10-15 |
| 6442362 | Image forming apparatus for making recovery and restoration of toners by electrical conductive member | Jun Hirabayashi, Harumi Ishiyama | 2002-08-27 |
| 6389254 | Charging member holding charge accelerating particles in a continuous bubble | Harumi Ishiyama, Jun Hirabayashi | 2002-05-14 |
| 6301455 | Charging member, charging device and image forming apparatus wherein deposition of magnetic particles to a member to be charged is effectively prevented | Harumi Ishiyama, Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Seiji Mashimo | 2001-10-09 |